From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6E874C43334 for ; Mon, 27 Jun 2022 22:01:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242361AbiF0WBZ (ORCPT ); Mon, 27 Jun 2022 18:01:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59872 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240208AbiF0Vzv (ORCPT ); Mon, 27 Jun 2022 17:55:51 -0400 Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C203D14D27; Mon, 27 Jun 2022 14:55:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1656366907; x=1687902907; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=RURQ3udaqrRiQcyGTuHQxfa7/HRWoHgGXC9+BSTk/WE=; b=gYj2w1ECA0jrrqCfYriYZwDxO6DgRWOZMaPd1CInbmn6ZZXvriMU7gwS t8ixX/VQmG3BY9cqpXdxQkoUS8r0nf3AR9Fnf3uQvRIm1MjIUBVm8hzcz Mm+Zz6e/Y4DcwxENGBwduLPn66WhHR6fa1r4rd3tifkcG6KB66mLeZCsi aI9X2C9ez7RFcl4VOyMqVcnalfB7Ty+qRqpdLEEjLNg2ZcK2RmTp/LbQT i44mZlmMMyYoKnAFqPwS8G4dsxzt2neM3uR4VZ2NFuTeSXDhTV4buqhId zxvvGlAwUBRTnEk0ONwsyFQSTuNv/nFJek2S4zeEgDtwFvylKrOkkZcO1 Q==; X-IronPort-AV: E=McAfee;i="6400,9594,10391"; a="279116138" X-IronPort-AV: E=Sophos;i="5.92,227,1650956400"; d="scan'208";a="279116138" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Jun 2022 14:55:01 -0700 X-IronPort-AV: E=Sophos;i="5.92,227,1650956400"; d="scan'208";a="657863730" Received: from ls.sc.intel.com (HELO localhost) ([143.183.96.54]) by fmsmga004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Jun 2022 14:55:01 -0700 From: isaku.yamahata@intel.com To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: isaku.yamahata@intel.com, isaku.yamahata@gmail.com, Paolo Bonzini Subject: [PATCH v7 089/102] KVM: TDX: Handle TDX PV CPUID hypercall Date: Mon, 27 Jun 2022 14:54:21 -0700 Message-Id: X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Isaku Yamahata Wire up TDX PV CPUID hypercall to the KVM backend function. Signed-off-by: Isaku Yamahata --- arch/x86/kvm/vmx/tdx.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/arch/x86/kvm/vmx/tdx.c b/arch/x86/kvm/vmx/tdx.c index a30be04229d7..96e41602125b 100644 --- a/arch/x86/kvm/vmx/tdx.c +++ b/arch/x86/kvm/vmx/tdx.c @@ -947,12 +947,34 @@ static int tdx_emulate_vmcall(struct kvm_vcpu *vcpu) return 1; } +static int tdx_emulate_cpuid(struct kvm_vcpu *vcpu) +{ + u32 eax, ebx, ecx, edx; + + /* EAX and ECX for cpuid is stored in R12 and R13. */ + eax = tdvmcall_a0_read(vcpu); + ecx = tdvmcall_a1_read(vcpu); + + kvm_cpuid(vcpu, &eax, &ebx, &ecx, &edx, true); + + tdvmcall_a0_write(vcpu, eax); + tdvmcall_a1_write(vcpu, ebx); + tdvmcall_a2_write(vcpu, ecx); + tdvmcall_a3_write(vcpu, edx); + + tdvmcall_set_return_code(vcpu, TDG_VP_VMCALL_SUCCESS); + + return 1; +} + static int handle_tdvmcall(struct kvm_vcpu *vcpu) { if (tdvmcall_exit_type(vcpu)) return tdx_emulate_vmcall(vcpu); switch (tdvmcall_leaf(vcpu)) { + case EXIT_REASON_CPUID: + return tdx_emulate_cpuid(vcpu); default: break; } -- 2.25.1